Belt-shifter



G. FUMAGALLI, C. SURICO AND CARBONE.

Patented May-24,1921.

M am Rw m L EM V.. WJ cu .m m u L .m m cr D w m mom/fx UNITED STATES PATENT OFFICE.

GIACOMO FUMAGALLI, CARMINE SURICO, AND PAUL CARBONE, OF NEW YORK, N. Y., ASSIGNORS TO CLAREMONT MACHINE CO., OF NEW YORK, N. Y., A CORPORATION 0F NEW YORK.

BELT-SHIFTER.

Specification of Letters Patent.

Patented May 24, 1921.

Application led May 13, 1920. Serial No. 381,096.

To all whom t may concern.'

Be it known that we, GIACOMO FUMAGALLI and CARMINE SUiuoo, subjects of italy, and PAUL CARBONE, a citizen of the United States, all residing at New York city, in the county of New York and State of New York, have invented certain `new and useful Improvements in Belt-Shifters, of which the following is a specification.

This invention relates to improvements in belt shifting devices and more particularly to a type employed to reverse the direc* tion of rotation of a driven pulley by the interchanging or shifting thereon of oppositely driven belts.

One object of the invention is to provide a device of this character which is simple in construction and adaptable to any machine where a quick reversing mechanism is desired.

Another object is to provide a shifting device operated by a single handle adapted to shift the belt guides independently of each other.

The preferred form of the invention is illustratively exemplified in the accompanying drawing, wherein- Figure 1 is a perspective view of the several units of our invention shown in their proper relation to each other;

Fig. 2 is a side elevation of the toothed sectors through the medium of which the belt Shifters are actuated; and

Fig. 3 is a detail plan view of the .driving pulleys, showing the belt Shifters 1n their normal positions, together with their link connections.

The invention is applicable to many kinds of machines wherein a driving belt is to be shifted from one pulley to another, but as the machine to which the device is applied forms no part of the present invention it has been deemed advisable, in the interest of clarity of illustration, to omit all representation of such machine from the drawings.

Referring to the drawing, 10 and 11 indicate the side frames of any suitable machine on which our device is mounted. A supporting bracket 12 secured to the frame 10 has mounted therein a fixed shaft 13 projecting outwardly at each side of the frame 10 to form a bearing for two like mutilated sector gears 14 and 15 adapted to be engaged by similar sector gears 16 and 17 fixed to a rock shaft 18 supported in bearings (not shown). in the frame of the machine. It will be noted upon reference to Figs. land 2 of the drawing that the gear sectors 16 and 17 are reversely mounted on the shaft 18, in the sense that the untoothed portion of the gear 16 projects normally upwardly whileV the untoothed portion of gear 17 normally extends downwardly. The comple mental sectors 14 and 15 are correspondingly mounted on the shaft 13 so that when the shaft 18 is rocked in either direction by mea-ns of the handle 19 only one of the sectors 14 or 15 will be actuated.

Connected to and moving with the sector gears 1a and 15 about their bearing 13 are radially extending arms 20 and 21 respectively, connected to the belt Shifters by links 22 and 23 on opposite sides of the machine, adapted to control the slide blocks 24 and 25 guided in their sliding movement by a slide bar 26, having one end xed to the frame 11 and its other end supported by a suitable standard 27. The slide blocks 24C and 25 are recessed as shown at 28 permitting v them to interlock when moved together.

The blocks 2a and 25 support the depending belt guides 29 and 30. The belt guide 29 is designed to shift a constantly open belt 31 from a loose pulley 32 to a fixed or driving pulley 33, and the guide 30 is designed to shift a constantly driven cross belt 34 from a loose ulley 35 onto the xed pulley 33. The pulleys 32 and 35 are loosely mounted on the main drivelshaft 36 of the machine having interposed therebetween the tight or lined pulley 33. rlhis construction is well known in the art and is used in conjunction with the sectors for controlling their respective lateral movement.

In operation, if the handle 19 be tilted to the right the sector gears 16 and 17 will rotate downwardly causing the teeth of the gear 17 to engage those on the gear 15 while the gear 16 will simply have its toothless section ride on a corresponding toothless surface of the gear 14 causing no movement of the latter. llhe downward movement of the gear 15 and consequent arcuate movement of the arm 21 will force the link and slide in the direction of the arrow X shifting, the belt 31 onto the fixed pulley 33.

f To reverse the drive the handle is -returned to the neutral position (normally upright) and tilted to the left whereupon the sector gears 16 and 14 will operatively coact, while the untoothed portion of the gear 17 moves idly on the correspondingly forward Vportion of gear 15 so that the latter is not actuated. The throw of the shifters or belt guides 29 and 30 can be varied by changing the length of the arms 20 and 21 to accommodate the different widths of belt which may be used on various types of machines.

1. In a device of the character described, the combination with a pair of belt guides, of slide blocks supporting said belt guides and provided with interlocking recesses,v

means for shifting said guides comprising engaging complemental mutilated gear sectors, and means for actuating said sectors toshift either guide independently of the other.

2. In a device of the character described, the combination with a pair of belt guides, each spanning a belt to be shifted, of slide blocks by which said belt guides are supported, said slide blocks being provided with interlocking recesses, axially movable links connected to said slide blocks, and means for actuating said links comprising two pairs of interengaging mutilated gears and means for rotating the latter to shift either slide block axially over the path of the other.

3. In a device of the character described, the combination with a pair of belt guides,

of slide blocks by which said guides are carried, links connected to said slide blocks, a fixed shaft, arms rotatable about said shaft and connected to said links, mutilated gear sectors rotatable about said shaft and rigid with said arms, a rock shaft substantially parallel to the rst mentioned shaft, mutilated gear sectors on said rock shaft engagingl the first Vmentioned gear sectors, land means for rocking said shaft to actuate said gear sectors. Y

4. In a device of the character described, the combination witha pair of belt guides, slide blocks supporting said guides and provided with interlocking recesses, a slide bar supporting said slide blocks, of shifting means connected with said slide blocks including a rock shaft and mutilated gear sec-v eiAcoMo FUMAGALLI. CARMINE sUnoo. PAUL cAnnoNE. 

